如何使用铁路由器或流星本身来提供文件? [英] How to serve a file using iron router or meteor itself?

问题描述

我正在尝试在我的Meteor应用程序上提供一个zip文件，但被卡住了.经过大量的Google搜索后，最好的方法似乎是使用Iron Router，但我不知道如何:

I'm trying to serve a zip file on my Meteor app but I'm stuck. After a lot of Googling it seems the best way to go is with Iron Router but I don't know how:

Router.map ->
  @route "data",
    where: 'server'
    path: '/data/:id'
    action: ->
      data = getBase64ZipData(this.params.id)
      this.response.writeHead 200, { 'Content-Type': 'application/zip;base64' }
      ???

推荐答案

在服务器上:

var fs = Npm.require('fs');

var fail = function(response) {
  response.statusCode = 404;
  response.end();
};

var dataFile = function() {
  // TODO write a function to translate the id into a file path
  var file = fileFromId(this.params.id);

  // Attempt to read the file size
  var stat = null;
  try {
    stat = fs.statSync(file);
  } catch (_error) {
    return fail(this.response);
  }

  // The hard-coded attachment filename
  var attachmentFilename = 'filename-for-user.zip';

  // Set the headers
  this.response.writeHead(200, {
    'Content-Type': 'application/zip',
    'Content-Disposition': 'attachment; filename=' + attachmentFilename
    'Content-Length': stat.size
  });

  // Pipe the file contents to the response
  fs.createReadStream(file).pipe(this.response);
};

Router.route('/data/:id', dataFile, {where: 'server'});

在客户端上:

<a href='/data/123'>download zip</a>

对此的好处是它将下载文件作为附件，并且您可以自定义用户看到的文件名.诀窍是编写fileFromId函数.我发现将所有动态生成的文件存储在/tmp下最简单.

The nice part about this is that it will download the file as an attachment, and you can customize the filename that the user sees. The trick is writing the fileFromId function. I find it's easiest to store all of my dynamically generated files under /tmp.

此答案假设文件是​​动态生成的.如果要提供静态内容，可以将文件放在public目录下.有关更多详细信息，请参见此问题

This answer assumes that the files are being generated dynamically. If you want to serve static content, you can just put your files under the public directory. See this question for more details.

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